Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/12/2024, 13:15 UTC

General

  • Target

    rb.exe

  • Size

    669KB

  • MD5

    ae286ff258c5ec1d15a4fd3f64875d5b

  • SHA1

    576b9e76e385b389f859ee4bde2d12776bbaedca

  • SHA256

    ce0facb2c24c71a20117e27af3aed9d6815500eeadba6e79b472bef539d82769

  • SHA512

    f2cf299e20571701ab7a7ad82103317279e8378f114e3de76b22580eb5e8263a025af1fb653b27323645e0ac63983dcbf6f609154a16e8e9d6c81531c369183b

  • SSDEEP

    12288:dQA0FfTcwpBuV2UxqDmuiLZeUaoFi2XZWfGe615HhAZV8DiKD/KeX:Tuf4wTuV2Ux3uIZeUBi2Te6HWnKrKe

Malware Config

Extracted

Path

\Device\HarddiskVolume1\HOW_TO_RECOVER_DATA.html

Ransom Note
<html> <style type="text/css"> body { background-color: #f5f5f5; } h1, h3{ text-align: center; text-transform: uppercase; font-weight: normal; } /*---*/ .tabs1{ display: block; margin: auto; } .tabs1 .head{ text-align: center; float: top; padding: 0px; text-transform: uppercase; font-weight: normal; display: block; background: #81bef7; color: #DF0101; font-size: 30px; } .tabs1 .identi { font-size: 10px; text-align: center; float: top; padding: 15px; display: block; background: #81bef7; color: #DFDFDF; } .tabs .content { background: #f5f5f5; /*text-align: center;*/ color: #000000; padding: 25px 15px; font-size: 15px; font-weight: 400; line-height: 20px; } .tabs .content a { color: #df0130; font-size: 23px; font-style: italic; text-decoration: none; line-height: 35px; } .tabs .content .text{ padding: 25px; line-height: 1.2; } </style> <body> <div class="tabs1"> <div class="head" ><b>Your personal ID:</b></div> <div class="identi"> <span style="width:1000px; color: #ffffff; font-size: 10px;">118281505A0CD820B7D651C73218F1BED5E5B1CA8F057B8C71129A679C940CF4704C803345BEBA06767B56EB2A5E03463CD0D9A9F8868827C3424277D2E57244<br>379D8DAAAC7729678D6432C2543C5A53CDBABB59D62C271CD30CAD30F5ECC01AC648E5AB6058878F099849E02694917AD2A070523A5ED92BFF8E3749CFF4<br>C7AF0758C4CDC7599D62B47771AC28F1AA1F9AEC8C3EBD7192A5A2AFA0FC1EE95D2758B61C186BA9A2E2F24D10DB3CCE6C1FD9CC8CB68993BF0EC9F3385D<br>366699CEABFFAB38AE9C54700AEC8C11D432C5A73A2E8425C9960BA328D4585E47066CA602BED0628657AF58745536CA80B9DF4C80DD3EA8A7BF3CBA60DD<br>41BF6074C7A5923520E33A1F7E779B11E1482445D1F6FAF6FD943ACAC9CF4D3AAB85FA34A96E1D27B3EE1A60BD12BBA2C9586DEE3474933D1FDA392C37EB<br>76AE7B1566C459E8699BE456035F839F73D0F91840BCBFDCE01F17113A2409EA9401A9F8F40A077FD302EDAF9CFF9B1305B8159016CE0F2DC054C58DC566<br>71970A2868744C8E328F6135CBA6EC9F61FD4A426FCC36E0D9D3CC4C78BBCF9EAF00AD6EC9A81204B4BBEC6F326635345AB6E0CED2998583B33396218B78<br>16EB2EB048D10F2A26C0859D0CCFD1DBA585AF0F1495183BB945910F376051C809A0ED8DDA518A0A3D09B078074DFB6666FD9A0CC21AB6A5CBC6D03E360B<br>EDF0B299851CC7A2B798BB107325</span> <br> <!-- !!! dont changing this !!! --> </div> </div> <!-- --> <div class="tabs"> <!--tab--> <div class="tab"> <div id="tab-content1" class="content"> <div class="text"> <!--text data --> <b>/!\ YOUR COMPANY NETWORK HAS BEEN PENETRATED /!\</b><br> <b>All your important files have been encrypted!</b><br><br> <hr> Your files are safe! Only modified. (RSA+AES)<br><br> ANY ATTEMPT TO RESTORE YOUR FILES WITH THIRD-PARTY SOFTWARE<br> WILL PERMANENTLY CORRUPT IT.<br> DO NOT MODIFY ENCRYPTED FILES.<br> DO NOT RENAME ENCRYPTED FILES.<br><br> No software available on internet can help you. We are the only ones able to<br> solve your problem.<br><br> We gathered highly confidential/personal data. These data are currently stored on<br> a private server. This server will be immediately destroyed after your payment.<br> If you decide to not pay, we will release your data to public or re-seller.<br> So you can expect your data to be publicly available in the near future..<br><br> We only seek money and our goal is not to damage your reputation or prevent<br> your business from running.<br><br> You will can send us 2-3 non-important files and we will decrypt it for free<br> to prove we are able to give your files back.<br><br> <!--text data --> <hr> <b>Contact us for price and get decryption software.</b><br><br> <a>.onion</a><br> * Note that this server is available via Tor browser only<br><br> Follow the instructions to open the link:<br> 1. Type the addres "https://www.torproject.org" in your Internet browser. It opens the Tor site.<br> 2. Press "Download Tor", then press "Download Tor Browser Bundle", install and run it.<br> 3. Now you have Tor browser. In the Tor Browser open <a>qd7pcafncosqfqu3ha6fcx4h6sr7tzwagzpcdcnytiw3b6varaeqv5yd.onion </a><br> 4. Start a chat and follow the further instructions. <br><br> <hr> <b>If you can not use the above link, use the email:</b><br> <a href="help_24_decr1@outlook.com ">help_24_decr1@outlook.com </a> <br><a href="help_24_decr2@outlook.com">help_24_decr2@outlook.com</a> <br> <b>* To contact us, create a new free email account on the site:</b> <a href="https://protonmail.com">protonmail.com<br> <hr> <b> IF YOU DON'T CONTACT US WITHIN 72 HOURS, PRICE WILL BE HIGHER.</b><br> </div> </div> </div> <!--tab--> <!--text data --> </div> </div> <!--tab--> </div> </div> </body> </html>
Emails

href="help_24_decr1@outlook.com

">help_24_decr1@outlook.com

href="help_24_decr2@outlook.com">help_24_decr2@outlook.com</a>

Signatures

  • MedusaLocker

    Ransomware with several variants first seen in September 2019.

  • MedusaLocker payload 1 IoCs
  • Medusalocker family
  • UAC bypass 3 TTPs 2 IoCs
  • Renames multiple (190) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Drops desktop.ini file(s) 1 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 63 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • System policy modification 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\rb.exe
    "C:\Users\Admin\AppData\Local\Temp\rb.exe"
    1⤵
    • UAC bypass
    • Checks whether UAC is enabled
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:4496
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:1372
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:4368
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:4732
  • C:\Users\Admin\AppData\Roaming\svhost.exe
    C:\Users\Admin\AppData\Roaming\svhost.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    PID:2424

Network

  • flag-us
    DNS
    8.8.8.8.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    8.8.8.8.in-addr.arpa
    IN PTR
    Response
    8.8.8.8.in-addr.arpa
    IN PTR
    dnsgoogle
  • flag-us
    DNS
    58.55.71.13.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    58.55.71.13.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    83.210.23.2.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    83.210.23.2.in-addr.arpa
    IN PTR
    Response
    83.210.23.2.in-addr.arpa
    IN PTR
    a2-23-210-83deploystaticakamaitechnologiescom
  • flag-us
    DNS
    138.32.126.40.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    138.32.126.40.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    95.221.229.192.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    95.221.229.192.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    228.249.119.40.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    228.249.119.40.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    241.150.49.20.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    241.150.49.20.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    56.163.245.4.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    56.163.245.4.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    18.31.95.13.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    18.31.95.13.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    172.210.232.199.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    172.210.232.199.in-addr.arpa
    IN PTR
    Response
  • flag-us
    DNS
    88.210.23.2.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    88.210.23.2.in-addr.arpa
    IN PTR
    Response
    88.210.23.2.in-addr.arpa
    IN PTR
    a2-23-210-88deploystaticakamaitechnologiescom
  • flag-us
    DNS
    11.227.111.52.in-addr.arpa
    Remote address:
    8.8.8.8:53
    Request
    11.227.111.52.in-addr.arpa
    IN PTR
    Response
No results found
  • 8.8.8.8:53
    8.8.8.8.in-addr.arpa
    dns
    66 B
    90 B
    1
    1

    DNS Request

    8.8.8.8.in-addr.arpa

  • 8.8.8.8:53
    58.55.71.13.in-addr.arpa
    dns
    70 B
    144 B
    1
    1

    DNS Request

    58.55.71.13.in-addr.arpa

  • 8.8.8.8:53
    83.210.23.2.in-addr.arpa
    dns
    70 B
    133 B
    1
    1

    DNS Request

    83.210.23.2.in-addr.arpa

  • 8.8.8.8:53
    138.32.126.40.in-addr.arpa
    dns
    72 B
    158 B
    1
    1

    DNS Request

    138.32.126.40.in-addr.arpa

  • 8.8.8.8:53
    95.221.229.192.in-addr.arpa
    dns
    73 B
    144 B
    1
    1

    DNS Request

    95.221.229.192.in-addr.arpa

  • 8.8.8.8:53
    228.249.119.40.in-addr.arpa
    dns
    73 B
    159 B
    1
    1

    DNS Request

    228.249.119.40.in-addr.arpa

  • 8.8.8.8:53
    241.150.49.20.in-addr.arpa
    dns
    72 B
    158 B
    1
    1

    DNS Request

    241.150.49.20.in-addr.arpa

  • 8.8.8.8:53
    18.31.95.13.in-addr.arpa
    dns
    70 B
    144 B
    1
    1

    DNS Request

    18.31.95.13.in-addr.arpa

  • 8.8.8.8:53
    56.163.245.4.in-addr.arpa
    dns
    71 B
    157 B
    1
    1

    DNS Request

    56.163.245.4.in-addr.arpa

  • 8.8.8.8:53
    172.210.232.199.in-addr.arpa
    dns
    74 B
    128 B
    1
    1

    DNS Request

    172.210.232.199.in-addr.arpa

  • 8.8.8.8:53
    88.210.23.2.in-addr.arpa
    dns
    70 B
    133 B
    1
    1

    DNS Request

    88.210.23.2.in-addr.arpa

  • 8.8.8.8:53
    11.227.111.52.in-addr.arpa
    dns
    72 B
    158 B
    1
    1

    DNS Request

    11.227.111.52.in-addr.arpa

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\svhost.exe

    Filesize

    669KB

    MD5

    ae286ff258c5ec1d15a4fd3f64875d5b

    SHA1

    576b9e76e385b389f859ee4bde2d12776bbaedca

    SHA256

    ce0facb2c24c71a20117e27af3aed9d6815500eeadba6e79b472bef539d82769

    SHA512

    f2cf299e20571701ab7a7ad82103317279e8378f114e3de76b22580eb5e8263a025af1fb653b27323645e0ac63983dcbf6f609154a16e8e9d6c81531c369183b

  • C:\Users\Default\ntuser.dat.LOG2

    Filesize

    536B

    MD5

    d5f24532e4368a8bbb28d98721629a66

    SHA1

    3c013bef72fd3b125af8e32a7932b605ee49da9e

    SHA256

    a9824b3f8650d33df863a3565f46c24ce950674a6ea5bbd972d88d062e69d1c0

    SHA512

    407bd803d254887c9ae56c8f5d2a3ad9bfc4c72d149af7277c7d3be20dd23ecea53c8c817871f9c9fb273c78a197e4e4b4014dc533a985b1a8609d37258df81b

  • \Device\HarddiskVolume1\HOW_TO_RECOVER_DATA.html

    Filesize

    5KB

    MD5

    7321b09180076ae68af78fec2ff00d77

    SHA1

    48fac87d9ae820e99f1dc8e08b25d8455dcd87fa

    SHA256

    50d9a45212191a9607ab40c4b0a9727ca5847508ae063e2774b7d3a02b9e7196

    SHA512

    e37cdec5231122ce4b96913591696f18d14b4f3e3f8763c5742fca6962e18ebcebf855fe231db354adaf3b2bb5c4eb9f012ea86fcdda8ae2f41933d84bf0390e

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